Fig. 2From: Recent advances of on-demand dissolution of hydrogel dressingsFormation of poly(ethylene glycol) lysine sulfhydryl (PEG-lysSH) and subsequent dissolution. a Thiol-thioester exchange reaction [37]. b The example of a hydrophilic PEG-lysSH hydrogel dissolution based on thiol-thioester exchange. Figures are adapted with permission from the original articles of Ghobril et al. [37] (Copyright 2013 by Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim). CME cysteine methyl eaterBack to article page